JPH0518910U - Vehicle air conditioner - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an air conditioning system for a vehicle, which has a small number of newly added configurations and can obtain high ventilation performance. [Structure] An inside / outside air switching door 11 that switches between an outside air introduction mode and an inside air introduction mode by driving a first door motor 21.
c, a blower motor 11d that drives air to be introduced into the air conditioning unit 1 and blown out into the vehicle compartment, and the input means 40
A vehicle air conditioner provided with a controller 30 for controlling the drive of the first door motor and the blower motor based on an input signal related to air conditioning obtained from
A time setter 40d for setting a ventilation reserved time is provided as the input means, and the controller is operated to drive the first door motor to start the inside / outside air switching door with the reservation time set by the time setter as a start condition. A ventilation control unit was provided for switching to the outside air introduction mode and performing parking ventilation control for driving the blower motor until a predetermined stop condition was satisfied.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle air conditioner, and more particularly to a device that can perform ventilation during parking.

[0002]

[Prior Art]

 BACKGROUND ART Conventionally, as a vehicle air conditioner capable of performing ventilation during parking, for example, one described in Japanese Utility Model Publication No. 2-139107 is known. This vehicle air conditioner is composed of a solar cell mounted on the vehicle body roof and a ventilation fan that is provided in a passage communicating with the inside and outside of the vehicle compartment and introduces outside air into the vehicle compartment using the solar cell as a drive source. In addition, since the ventilation fan is used for ventilation while the sun is shining, it is possible to prevent the vehicle interior from becoming hot, especially in hot weather in summer.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technology, it is necessary to provide a solar battery, a ventilation fan driven by this solar battery, and a passage for this ventilation fan separately from the vehicle-mounted air conditioner. This will increase the mounting time and cost, and in particular, the opening of the passage must be newly formed inside and outside the vehicle body, making it difficult to set these positions and reducing the degree of freedom in shaping the vehicle body. There was a problem.

There is also a problem that sufficient ventilation performance cannot be obtained when the vehicle interior is hot, although the sun is not shining, such as during dusk or cloudy weather in summer.

The present invention has been made in view of the above problems, and an object thereof is to provide an air conditioning system for a vehicle, which has a small number of newly added configurations and can obtain high ventilation performance. .

[0006]

[Means for Solving the Problems]

 Therefore, in the present invention, an in-vehicle air conditioner is used, and a time setting means for setting a reserved time is provided as an input means, and the control means is provided with a ventilation motor that drives the blower motor by setting the inside / outside air switching door to the outside air mode when the reserved time comes. A control unit is provided to achieve the above purpose.

That is, in the vehicle air conditioner of the present invention, an air conditioning unit having a passage for communicating the inside and outside of the vehicle is provided with an inside air / outside air mode in which the air introduction mode is switched between the outside air introduction mode and the inside air introduction mode by driving the door actuator. A switching door and a blower motor that drives air to be introduced into the air conditioning unit and blows the air into the vehicle compartment are provided, and the door actuator and the door actuator are controlled based on an input signal related to air conditioning obtained from an input means. In the air conditioner provided with the control means for controlling the drive of the blower motor, the time setting means for setting the ventilation reserved time is provided as the input means, and the reserved time set by the time setting means is provided in the control means. As a start condition, the door actuator is driven to switch the inside / outside air switching door to the outside air introduction mode, and A means was provided with an aeration control unit that performs parking ventilation control that drives the blower motor until a fixed stop condition is satisfied.

[0008]

[Action]

 For example, when the passenger compartment is likely to reach a high temperature during parking, such as when parked in the hot sun for a long time, the time setting means sets a time just before the time when the vehicle returns to the vehicle as a reserved time for aeration. Then leave the vehicle.

Then, at the reserved time, the ventilation control section of the control means starts parking ventilation control, drives the door actuator to switch the inside / outside air switching door to the outside air introduction mode, and further drives the blower motor. Therefore, when the outside air is introduced into the vehicle for ventilation and the temperature of the passenger compartment is higher than the outside air, the passenger compartment temperature can be lowered.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall view showing a vehicle air conditioner according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an air conditioning unit. The air conditioning unit 1 includes an introduction unit 11 and a cooling unit 12. , Heater unit 13.

The introduction unit 11 has an outside air introduction port 11a that communicates with the outside of the vehicle, an inside air introduction port 11b that communicates with the passenger compartment, and an air introduction mode with the inside air introduction port 11b side open. Mode and the outside air introduction mode in which the outside air introduction port 11a side is opened (a mode in which both sides are opened can also be formed) and air is introduced into the air conditioning unit 1 and the air outlet unit 14 described later. A blower motor 11d, which is driven to blow it out from the above, is provided. The inside / outside air switching door 11c is changed in opening degree by driving the first door motor 21, which is a door actuator.

The cooling unit 12 is a unit which is provided with an evaporator 12 a and cools the air blown from the introduction unit 11.

The heater unit 13 is provided with a heater core 13a and an air mix door 13b. Based on the opening degree of the air mix door 13b, the ratio of heating by the heater core 13a in the air blown from the cooling unit 12 is determined and predetermined. It is a unit that forms temperature air. The opening of the air mix door 13b is changed by driving the second door motor 22.

At the rear end of the heater unit 13, an air outlet 14 to the vehicle compartment is formed. As the outlets 14, a defroster outlet 14a, a ventilator outlet 14b, and a floor outlet 14c are provided, and the air passing through the heater unit 13 is guided to the defroster outlet 14a side or another defroster mode. Exit 14b. An air distribution switching door 14d is provided to switch between the air blowing modes for guiding the air to 14c. By the way, the resistance when blowing air is smaller in the defroster mode than in the ventilation mode. The air distribution switching door 14d changes the opening degree by driving the third door motor 23. Further, a switching door (not shown) is also provided on the ventilator outlet 14b and the floor outlet 14c downstream of the air distribution switching door 14d.

The drive of the blower motor 11d and each of the first to third door motors 21, 22, 23 is controlled by a controller 30 as a control means. That is, the controller 30 controls the driving of the motors 11d, 21, 22, 23 based on the input signal obtained from the input means 40. Incidentally, as the input means 40, as shown in the block diagram of FIG. 2, an outside air temperature sensor 40a for detecting the temperature outside the vehicle, an inside air temperature sensor 40b for detecting the temperature of the passenger compartment, and a battery not shown in the drawing. Battery voltage sensor 40c for detecting the voltage of the battery, a time setter (time setting means) 40d for setting a reserved time, a start switch 40e for starting the measurement of the time set by the time setter 40d, and an ignition switch. 40f and a door switch 40g that is switched in association with the open / closed state of the door (not shown) are provided. The time setting device 40d can be set and operated only when the ignition switch 40f is in the accessory position or the ON position.

The controller 30 performs a parking ventilation control by using a part thereof in addition to a normal air conditioning control including an automatic temperature control, an automatic air volume control, an inlet control, an outlet control, and the like. Note that the ordinary air conditioning control is known [for example, described in E24-48 of NISSAN Service Circular No. 628 (Issue: July 1989 Publisher: Nissan Motor Co.)]. Then, parking ventilation control will be described with reference to the flowchart of FIG.

Step 101 is a step of reading the reserved time set by the occupant using the time setting device 40d. By the way, this reserved time is the time from the setting to the start of the parking ventilation control, for example, 1 hour or 2 hours. As a method of setting the reserved time, a method of having a clock inside the controller 30 and setting a time to start the parking ventilation control such as what time is am or pm may be adopted.

Step 102 is a step of receiving a signal from the start switch 40e and measuring a reservation time. When the reservation time has elapsed, the process proceeds to the next step 103.

Step 103 is a step of judging whether or not the battery voltage is equal to or higher than a predetermined voltage V ₀ based on an input signal from the battery voltage sensor 40c. When the predetermined voltage V ₀ is not reached, parking ventilation control is performed. The control is stopped because it is unsuitable to perform, and if the voltage is equal to or higher than the predetermined voltage V ₀ , the process proceeds to the next step 104. That is, when the motors 11d, 21, 22, and 23 are driven even though the battery voltage is insufficient, the battery may run out, and thus such steps are provided.

Step 104 is a step of judging whether or not the door is closed based on the input signal from the door switch 40g. If the door is open, it is considered unsuitable for performing parking ventilation control and the control is stopped. If the door is closed, the process proceeds to the next step 105. In other words, when the door is open, ventilation is provided, so even if parking ventilation control is performed, it is useless, so such steps are provided. Incidentally, a step of determining whether the sliding roof is closed or the window glass is closed may be added to this step 104.

The above steps 101 to 104 are steps for determining the start condition of the parking ventilation control, and if the above conditions are satisfied, the process proceeds to the parking ventilation control of steps 105 to 108.

Step 105 is a step of driving the first door motor 21 so that the inside / outside air switching door 11c is in the outside air introduction mode.

In step 106, the air mix door 13b is set to the full cold mode, that is, the second door motor 22 is driven so that the air mix door 13b completely blocks the introduction surface side of the heater core 13a. It is a step.

Step 107 is a step in which the air distribution switching door 14d guides all the air from the heater unit 13 to the defroster outlet 14a side, and drives the third door motor 23 to be in the defroster mode.

Step 108 is a step of driving the blower motor 11d with a medium- and high-speed air volume.

Steps 109 to 113 following this step 108 are steps to determine whether or not the stop condition of the parking ventilation control started in the above steps is satisfied, and it is determined to be NO in any of the steps 109 to 113. In that case, the process proceeds to step 114, the blower motor 11d is stopped, and if YES is determined in all the steps, the process returns to step 108 to continue the parking ventilation control.

That is, in step 109, it is determined whether the room temperature is 25 ° C. or higher based on the input signal from the inside air temperature sensor 40b. In other words, if the room temperature is below 25 ° C, it is not necessary to ventilate, so this step is provided.

Step 110 is a step of determining whether the inside air temperature is higher than the outside air temperature based on signals from the outside air temperature sensor 40a and the inside air temperature sensor 40b. In other words, if ventilation is performed under such conditions, the internal temperature will rise, so this step is provided.

Step 111 is a step of judging whether or not the battery voltage is equal to or higher than a predetermined voltage V ₀ based on the input signal from the battery voltage sensor 40c, and is provided to prevent the battery from going up, like Step 103. There is.

Step 112 is a step of judging whether or not 5 minutes have passed since the drive of the blower motor 11d was started based on the timer built in the controller 30, and the battery voltage is the same as in step 111 above. In order to prevent the decrease, this step is provided because the ventilation effect is large at the beginning of ventilation, but after that it is not so effective even if it is carried out for a long time. By the way, since step 111 is set, it is possible to prevent battery exhaustion, but this alone will reduce the voltage to the end of the allowable range, and in this step 112 there is sufficient voltage. This prevents the voltage from dropping to the limit of the allowable range.

In step 113, it is determined whether or not the door is closed based on the switching state of the door switch 40g, which is set for the same reason as in step 104.

The portion of the controller 30 that performs the determination / processing of the flowchart shown in FIG. 3 described above corresponds to the parking ventilation control unit in the claims.

Next, the operation of the embodiment will be described.

When the vehicle is to be parked in the hot sun for a long time, the ignition switch 40f is set to the accessory or ON position, and the time setter 40d sets a time shortly before returning to the vehicle as the reserved time, and the start switch 40e is set. throw into. After that, when the set reservation time has elapsed, if the battery is at the predetermined voltage or higher and the door is closed, the parking ventilation control is started. Then, based on this parking ventilation control, the first door motor 21 is driven to switch the inside / outside air switching door 11c to the outside air introduction mode, and the second door motor 22 is driven to switch the air mix door 13b to the full cold state. Instead, the third door motor 23 is driven to put the air distribution switching door 14d in the defroster mode, and then the blower motor 11d is driven to introduce the outside air into the air conditioning unit 1 and blow it out from the defroster outlet 14a.

As a result, the indoor temperature that has become high during parking is reduced. In particular, in the present embodiment, the defroster outlet 14a having a small ventilation resistance for the outside air is provided, which has good ventilation efficiency. The air blown out from the defroster outlet 14a is guided to the upper part of the vehicle compartment along the front glass, and the upper part of the vehicle compartment where hot air tends to accumulate is ventilated, so that the ventilation efficiency is high.

The blower motor 11d is driven for 5 minutes after the start of driving the blower motor 11d, whether the room temperature is lower than 25 ° C., the inside air temperature is lower than the outside air temperature, the battery is lower than a predetermined voltage. The blower motor 11d does not operate for more than 5 minutes.

As described above, in the present embodiment, the air conditioner that is conventionally mounted on the vehicle is used, a part for performing the parking ventilation control is added to a part of the controller 30, and the time setting device 40d and the starter are used. Ventilation during parking can be performed only by adding the switch 40e, and the number of additional components can be reduced, and the number of parts, manufacturing labor, and cost can be reduced.

Moreover, in the embodiment, the parking ventilation is not operated when the room temperature is lower than 25 ° C., the inside temperature is lower than the outside temperature, or the door is opened. In addition, the maximum drive time of the blower motor 11d by the parking ventilation control is set to 5 minutes to prevent unnecessary drive, and further, when the battery voltage becomes less than the predetermined voltage V _0. This has the effect of stopping the blower motor 11d to prevent the battery from going up.

In addition, during parking ventilation control, the air mix door 13b is set to the full cold mode to prevent air from passing through the heater core 13a having high ventilation resistance, and blown out in the defroster mode having the minimum ventilation resistance. In this way, it has the effect of obtaining high ventilation performance.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment. For example, in the embodiment, a vehicle interior side is controlled when parking ventilation control is performed. Although the blowout is set to the defroster mode to reduce the ventilation resistance, an example is shown, but ventilation may be performed in other modes. Further, although the door motor is shown as the door actuator in the embodiment, another actuator such as a solenoid or a negative pressure actuator may be used.

[0042]

[Effect of the device]

 As described above, the vehicle air conditioner of the present invention is provided with the time setting means for setting the ventilation reservation time as the input means of the control means, and the control means is provided with the reservation set by the time setting means. When the time is reached, the door actuator is driven to switch the inside / outside air switching door to the outside air introduction mode, and a ventilation control section is provided to perform parking ventilation control to drive the blower motor until a predetermined stop condition is satisfied. As a result, the indoor ventilation can be performed regardless of the parking condition and the weather condition, and the discomfort of heat and odor when riding in a parked vehicle in the summer can be eliminated. Further, there is no need to newly add a ventilation passage that connects the inside and outside of the solar cell or the vehicle body, and the effect that the labor and cost of the configuration and manufacturing can be reduced can be obtained.

[Brief description of drawings]

FIG. 1 is an overall view showing a vehicle air conditioner according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main part of an apparatus according to an embodiment.

FIG. 3 is a flowchart showing an operation flow of parking ventilation control in the controller of the embodiment apparatus.

[Explanation of symbols]

 1 Air Conditioning Unit 11c Inside / Outside Air Switching Door 11d Blower Motor 21 First Door Motor (Door Actuator) 30 Controller (Control Means) 40 Input Means 40d Time Setting Device (Time Setting Means)

Claims (1)

[Scope of utility model registration request] 1. An inside / outside air switching door for switching an air introduction mode between an outside air introduction mode and an inside air introduction mode by driving a door actuator in an air conditioning unit having a passage for communicating the inside and outside of a vehicle, and air in the air conditioning unit. An air conditioner that is provided with a blower motor that is driven to be introduced and blown into the vehicle compartment, and a control unit that controls the drive of the door actuator and the blower motor based on an input signal related to air conditioning obtained from the input unit. In the above, a time setting means for setting a ventilation reserved time is provided as the input means, and the control means causes the door actuator to be driven to switch between the inside air and the outside air with the reservation time set by the time setting means as a start condition. Switch the door to the outside air introduction mode and drive the blower motor until the specified stop condition is met. An air conditioning system for a vehicle, comprising: a ventilation control unit that performs parking ventilation control for moving the vehicle.